British sweets are having their own nostalgia-fueled boomlet, with old-fashioned candy shops popping up across London. At the Hope and Greenwood shops (1 Russell Street, Covent Garden; 011-44-207-240-3314; hopeandgreenwood.co.uk), the co-founder Kitty Hope and her team whip up traditional licorice and boiled sweets along with new-old concoctions like Fizz! Bang! Wallops! or Rhubarb and Custard. Suck and Chew in the East End (130 Columbia Road; 011-44-208-983-3504; suckandchew.co.uk) sells chocolates emblazoned with the Union Jack, chocolate playing cards and traditional English toffees. And at Mrs Kibble’s Old Sweet Shoppe (57a Brewer Street, Soho; 011-44-333-123-2345; mrskibbles.co.uk), old-timey bonbons in jars fill the shop windows. Thanks to E.U. regulations, it’s all sold in metric measures, not by the quarter pound. Those were the days.